Appendix No. 3 Hydrometric Data

Study to Address Flooding on the Dunkellin River & Aggard Stream Appendix No. 3 Hydrometric Data iv

STATION NAME RATHGORGIN 22-Oct-09 STATION No. 29001 RAFORD Annual Maximum Series of Recorded Water Levels & Estimated Flows YEAR (maod - Poolbeg) (m) FLOW (m3/s) 1957 33.48 1.84 N/A 30/10/1957 1958 32.77 1.13 N/A 14/10/1958 1959 33.51 1.87 N/A 28/12/1959 1960 33.39 1.75 N/A 05/12/1960 1961 33.46 1.85 13.37 01/12/1961 1962 33.28 1.67 11.68 06/11/1962 1963 33.46 1.85 13.37 12/05/1964 1964 33.98 2.37 18.68 08/10/1964 1965 33.38 1.77 12.61 19/11/1965 1966 33.34 1.73 12.23 01/03/1967 1967 33.95 2.34 18.35 10/10/1967 1968 33.76 2.15 16.36 25/12/1968 1969 33.33 1.72 12.14 26/04/1970 1970 33.33 1.72 12.14 29/11/1970 1971 33.36 1.75 12.42 03/04/1972 1972 32.93 1.29 8.39 13/12/1972 1973 33.84 2.20 16.87 02/12/1973 1974 33.66 2.02 15.03 23/01/1975 1975 33.26 1.62 11.23 16/01/1976 1976 33.44 1.80 12.89 08/02/1977 1977 33.73 2.09 15.74 10/11/1977 1978 N/A N/A N/A N/A 1979 33.55 1.91 13.94 16/12/1979 (1) 1980 33.46 1.82 13.08 28/10/1980 1981 33.10 1.46 9.81 10/03/1982 1982 33.38 1.74 12.33 02/02/1983 1983 33.73 2.09 15.74 10/12/1983 1984 33.57 1.93 14.14 16/08/1985 1985 33.59 1.95 13.37 07/08/1986 1986 33.38 1.74 11.41 26/11/1986 1987 33.30 1.66 10.69 03/01/1988 1988 33.68 2.04 14.24 24/12/1988 1989 33.91 2.27 16.56 08/02/1990 1990 33.52 1.88 12.70 20/03/1991 1991 N/A N/A N/A N/A 1992 N/A N/A N/A N/A 1993 N/A N/A N/A N/A 1994 34.20 2.56 19.66 29/01/1995 (1) 1995 33.56 1.92 13.08 29/10/1995 1996 33.76 2.12 15.03 19/02/1997 1997 33.65 2.01 13.95 08/03/1998 1998 33.90 2.26 16.46 22/09/1999 1999 33.96 2.32 17.08 24/12/1999 2000 34.06 2.42 18.14 06/11/2000 2001 34.00 2.36 17.50 11/02/2002 2002 33.61 1.97 13.56 10/11/2002 2003 33.38 1.74 11.41 03/02/2004 2004 34.16 2.52 19.22 09/01/2005 (1) 2005 33.74 2.1 14.84 23/09/2006 2006 33.88 2.24 16.25 06/12/2006 k.f. 2007 34.26 2.624 20.37 29/12/2007 2008 34.13 2.492 18.92 25/08/2009 2009 34.51 2.877 23.25 20/11/2009 (2) WL Max = 34.26 2.624 WL Med = 33.56 1.92 WL Min = 32.77 1.138 Limit of Reliable Rating 13 m3/s - Flow estimates above this are extrapolated and should be treated with caution (1) Recorder malfunction - Estimated peak, recorder malfunction (2) Incomplete hydrometric year to 16/03/2010 Current Staff Gauge Zero = 31.636 maod (Poolbeg)

STATION NAME CRAUGHWELL 18-Jan-09 STATION No. 29007 L.CULLAUN Annual Maximum Series of Recorded Levels & Estimated Flows YEAR WATER LEVEL STAFF GAUGE ESTIMATED DATE (HYDROMETRIC) (maod - Malin Head) READING (m) FLOW (m3/s) 1983 20.90 2.20 27.71 10/12/1983 1984 20.91 2.21 27.93 16/08/1985 1985 20.65 1.95 22.35 07/08/1986 1986 20.82 2.12 25.95 19/12/1986 1987 20.74 2.04 24.23 04/02/1988 1988 20.51 1.81 19.53 12/01/1989 1989 21.12 2.42 32.76 08/02/1990 1990 20.79 2.09 25.30 26/12/1990 1991 20.72 2.02 23.81 07/01/1992 1992 20.86 2.16 26.82 15/06/1993 1993 20.96 2.26 29.06 09/12/1993 1994 21.40 2.70 39.60 29/01/1995 1995 20.72 2.02 23.81 27/10/1995 1996 20.82 2.12 25.95 20/02/1997 1997 20.83 2.13 26.17 07/03/1998 1998 20.98 2.28 29.51 22/09/1999 1999 21.12 2.42 32.76 25/12/1999 2000 21.11 2.41 32.52 07/11/2000 2001 21.19 2.49 34.42 12/02/2002 2002 20.64 1.94 22.14 11/11/2002 2003 20.38 1.68 17.03 03/02/2004 2004 21.53 2.83 42.93 09/01/2005 2005 20.53 1.83 19.92 24/09/2006 2006 20.93 2.23 28.38 08/12/2006 2007 21.47 2.77 41.38 29/12/2007 2008 20.94 2.24 28.58 25/08/2009 2009 22.34 3.64 65.74 20/11/2009 (1) WL Max = 22.34 3.64 WL Med = 20.90 2.20 WL Min = 20.38 1.68 Limit of Reliable Rating 55 m3/s - Flow estimates above this are extrapolated and should be treated with caution Current Staff Gauge Zero = 18.70mAOD (Malin) (1) Incomplete hydrometric year to 18/01/2009

STATION NAME AGGARD BRIDGE STATION No. 29010 AGGARD LOUGHREA HYDROLOGY AND 19-Mar-10 Annual Maximum Series of Recorded Water Levels and Estimated Flows YEAR (maod - Poolbeg) (m) FLOW (m3/s) 1982 21.62 0.76 4.10 02/04/1983 1983 21.60 0.74 3.88 16/01/1984 1984 21.63 0.77 4.21 15/08/1985 1985 21.54 0.68 3.25 22/01/1986 1986 21.75 0.89 5.74 18/12/1986 1987 21.60 0.89 2.87 19/01/1988 1988 21.81 1.10 5.20 11/01/1989 1989 22.12 1.41 10.27 06/02/1990 1990 21.84 1.13 5.60 26/12/1990 1991 21.79 1.08 4.94 13/11/1991(1) 1992 21.95 1.24 7.15 02/12/1992 1993 21.68 0.97 3.66 08/12/1993 1994 22.06 1.35 9.12 27/01/1995 1995 21.67 0.96 3.56 11/02/1996 1996 21.74 1.03 4.33 19/02/1997 1997 21.74 1.03 4.33 09/01/1998 1998 21.78 1.07 4.82 20/09/1999 1999 22.10 1.39 9.88 22/12/1999 2000 21.98 1.27 7.72 05/11/2000 2001 22.00 1.29 8.06 04/02/2002 2002 21.88 1.17 6.17 10/11/2002 2003 21.70 0.99 3.88 15/01/2004 2004 22.17 1.46 11.29 07/01/2005 (1) 2005 21.65 0.94 3.35 13/01/2006 2006 21.76 1.05 4.57 07/12/2006 2007 21.80 1.085 5.01 28/12/2007 2008 21.86 1.147 5.84 25/10/2008 2009 22.57 1.855 21.46 20/11/2009 (2) WL Max = 22.57 1.855 WL Med = 21.79 1.075 WL Min = 21.54 0.83 Limit of Reliable Rating 2.4 m3/s - Flow estimates above this are extrapolated and should be treated with caution (1) Water backed up behind both archesof bridge (2) Incomplete hydrometric year to 16/03/2010 Current Staff Gauge Zero = 20.71 maod (Poolbeg)

STATION NAME Rahasane Turlough STATION No. 29002 Dunkellin Dunkellin 19-Mar-10 Annual Maximum Series of Recorded Water Levels and Estimated Flows YEAR (maod - Poolbeg) (m) FLOW (m3/s) 1970 16.82 1.00 0.35 12/09/1971 (1) 1971 18.47 2.65 13.72 04/04/1972 1972 18.71 2.89 17.40 14/12/1972 1973 19.13 3.31 24.97 09/09/1974 1974 19.48 3.68 32.82 25/01/1975 1975 18.84 3.04 19.94 12/01/1976 1976 18.88 3.08 20.65 10/02/1977 1977 19.55 3.75 34.44 11/11/1977 1978 19.20 3.40 26.78 16/12/1978 1979 19.30 3.50 28.86 17/12/1979 1980 18.79 2.98 18.91 29/12/1980 1981 18.87 3.06 20.29 13/03/1982 1982 19.17 3.36 25.96 25/11/1982 1983 19.07 3.26 23.99 19/10/1983 1984 19.34 3.53 29.50 17/08/1985 (2) 1985 19.11 3.30 24.77 30/01/1986 1986 19.21 3.40 22.29 18/12/1986 1987 19.21 3.40 22.29 05/01/1988 1988 18.93 3.12 17.40 15/01/1989 1989 19.49 3.68 27.81 31/10/1989 1990 19.41 3.60 26.17 06/01/1991 1991 19.29 3.48 23.80 09/01/1992 1992 18.83 3.02 27.50 16/06/1993 1993 18.82 3.01 25.56 07/12/1993 1994 19.93 4.13 52.95 06/02/1995 1995 18.68 2.87 22.85 13/02/1996 1996 19.10 3.29 31.47 21/02/1997 1997 19.09 3.28 31.25 09/01/1998 1998 19.11 3.30 31.70 23/09/1999 1999 19.90 4.09 46.73 25/12/1999 2000 19.50 3.70 36.69 08/11/2000 2001 19.63 3.82 39.64 04/02/2002 2002 18.98 3.17 25.07 13/11/2002 2003 18.47 2.66 16.05 02/02/2004 2004 20.13 4.32 53.25 10/01/2005 (3) 2005 18.40 2.59 14.97 26/09/2006 2006 19.62 3.81 39.39 09/01/2007 2007 19.63 3.82 39.67 11/12/2007 2008 19.33 3.52 32.57 26/08/2009 2009 20.81 5.00 75.14 20/11/2009 (4) Limit of Reliable Rating 22.5 m3/s up to 1993 - Flow estimates above this are extrapolated and should be treated with caution Limit of Reliable Rating 39.5 m3/s from 1993 - Flow estimates above this are extrapolated and should be treated with caution (1) Incomplete year, records begin 01/08/1971 (2) Estimated Level (3) Flood mark leveled due to AR malfunction (4) Incomplete hydrometric year to 20/01/2010, WL estimated from survey Current Staff Gauge Zero = 15.80 maod (Poolbeg)

STATION NAME KILCOLGAN BRIDGE STATION No. 29011 16-Mar-10 Annual Maximum Series of Recorded Water Levels & Estimated Flows YEAR (maod - Malin head) (m) FLOW (m3/s) 1983 2.57 1.38 26.21 08/02/1984 1984 2.65 1.46 29.16 18/08/1985 1985 2.51 1.32 24.09 24/01/1986 1986 2.64 1.46 29.01 20/12/1986 1987 2.57 1.38 26.21 07/01/1988 1988 2.46 1.27 22.37 14/01/1989 1989 2.93 1.74 40.61 09/02/1990 1990 2.74 1.55 32.66 29/12/1990 1991 2.63 1.44 28.40 10/01/1992 1992 2.64 1.45 28.78 16/6/93 1993 2.62 1.43 28.03 24/12/93 1994 3.01 1.82 44.34 30/01/1995 1995 2.51 1.32 24.09 14/02/1996 1996 2.68 1.49 30.30 21/02/1997 1997 2.67 1.55 28.40 11/01/1998 1998 2.63 1.51 26.93 25/09/99 1999 2.95 1.83 39.81 26/12/1999 2000 2.75 1.63 31.47 08/11/2000 2001 2.80 1.69 33.67 06/02/2002 2002 2.56 1.44 24.44 13/11/2002 2003 2.36 1.25 18.13 05/01/2004 2004 2.94 1.82 39.37 11/01/2005 2005 2.43 1.31 20.13 26/09/2006 2006 2.85 1.73 35.52 09/12/2006 2007 2.75 1.63 31.47 11/12/2007 2008 2.70 1.58 29.42 26/08/2009 2009 3.70 2.58 79.37 21/11/2009 (1) WL Max = 3.007 1.82 WL Med = 2.643 1.456 WL Min = 2.363 1.176 Limit of Reliable Rating 46.7 m3/s - Flow estimates above this are extrapolated and should be treated with caution (1) Incomplete hydrometric year to 16/03/2010 Current Staff Gauge Zero = 1.187 maod (Malin head) Levels given are max fluvial levels and do not include tidal peaks.